/Engine/Source/Runtime/NavigationSystem/Public/NavigationDataHandler.h
bool ReplaceAreaInOctreeData ( const [UObject](API\Runtime\CoreUObject\UObject\UObject) & Object, [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UNavArea](API\Runtime\NavigationSystem\NavAreas\UNavArea) > OldArea, [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [UNavArea](API\Runtime\NavigationSystem\NavAreas\UNavArea) > NewArea, bool bReplaceChildClasses )